Archibald i



(No Model.)

A. H. BRENTNELL.

ROTARY ENGINE.

N0..47G,868. PatewtedJunelLl, 1892.'

RCHIBALD Il. BRNTN ILL, OF TORONTO, CANADA.

ROTARY ENGlN E,

SPEGIFIQATXON forming part of Letters etent No. 476,868, dated une 14, 1892.

Aoplication tiled August 2,

To m3,? whom it may concern:

Be it known that ARCHIBALD i'i. lstsr- NELL, of the city of Toronto, in the county ot' York, in the Province of Ontario, Canada, here invented certain new and nsenl lmprovoinents in Roissy Engines, of which the owing is n specitieation.

i invention relates to improvements in rotary engines; and the object of the invention is to design s simple, effective, and. eeonomicnlly-eeting engine.

rgure l is s Vertical section of any rotary Fig. 2 is a oros. -section. Fig. 3 is e il of s fori/ted block. Jlis an inside W of the ond of the casing, showing" the cam-groove.

ln'tlie drawings like letters of reterenoeindiente corresponding parts in the ligeros.

fr is e cylindrical casing, l5 the end oeps for the saine, and C the pistons. The pistons t) are located in recesses c, inside in the oeniirsi disk D, secured in position on the huh E, keyed to the shaft Gf are friction-rollers scoured on the ends of the spindles g, which are jonrnaled in sleeves j', scoured. on the inner ends of the pistons O. The opposite end ot the disk has secured to it a thin disk D', Whieh forms ends for the recesses c.

il. nre o.- series of rit-diei slots made in the central block 'D at the end of the recesses c, :ind 'l are similar slots meilein the disk l et the opposite end. ofthe recess o. The slots isi il are Wide enough to permit of the free radial movement of the sleeves f.

)I is e cmwgroove inode in the interior of the end. ,oeps B and designed for the passage oi the trictionfrollers G, so es to adjust the pistons, es hereinafter described, during the revolution of the engine. It will be noticed that the lower sweeps of tile come l are com eentric with the axle et the engine, While the opper sweeps ere eccentric to the seid axle. Consequently es the pistons revolve they ere drawn in toward the center they complete the opper portion of their revolution.

R is en adjustable plate the sides of which form the inner edge of the eatin-groove l1.

Tft is en adjust. ble plate the lower edge of which forms the top ot `the outer enrve of the oem-groove l;

1891- Serial No. 403,561. (No model.)

rPhe platos R and R are adjustably secured to the ends ll luy screw-bolts r r', projecting through slots s s' in the ends B. In order to permit the adjustment of the plate R, through which the shaft F extends, l form an enlarged hole t in the plato R. As the eenrgroove lis wider than the diameter of the friction-rollers g, and as the sleeves J rest against the inner and outer ends of the slots Il Il when the piston is into its fullest ext-ent and ont to its fullest extent, respectively, it will be seen that the friction-rollers g will impinge against the lower edge ot the plate R and the lower edge of the plate R only as they travel around the eem-groove l. It will therefore be seen that the friction of the rollers et the camgroore l-fwill-bo materially redneefl,v lt will also he understood that on account of the adjostehility of the plate R and R the radial movement of the pistons C moy 'he adjusted to s nieety.

,l is zt curved block bolted at the upper end of the cylindrical casing and having its lower surface eccentric to the center of revolution. The bleek tl' 'nes open ends j, es shown.

l is a packingbloek secured in the recess la in the center ol the bleek (l.

L is sserewbolt, the threaded end of which extends into :L female thread made in the top oi' 'the packing-bloeit The screw-bolt is tle signed to vertically adjust the psckingehlock. Z are spiral springs located between the top of the recess k and the top of the peckingbloek l L and M ere the ports, which are located immediately shove the inner ends of the open endg' of the curved bloekJ. L and M are connected by the pipes Z and in. to the four Way oook E.

n is the inlet-pipe, connected et the top of the easing N or" the sock N O is the exhaust-port, located at the bottoni of the easing N.

The port 1J of the four-way oook N is shown d in the driitwings opposite the inletpipe n end pipe M and the port (j of the four-Way cock is shown opposite the exhaust port o and pipe L Q; is n lever secured. on the end of the spina die of the tenen/sy oook and designed to turn the seid oook. The lever (22 is designed to IOO als

turn the four-Way cock so as to either shut ott the steam or water orA reverse the motion ot' the engine by bringing the port p opposite the ends of the inlet-pipe n and pipe Z and the port q opposite the ends of the pipe M and exhaust-port O.

P is a supplemental exhaust-port located at the bottom of the cylindrical casing A. This -port may be utilized for the purpose of With- .brieliy describe the operation of my engine.

As shown in Fig. 1, the four-way cock is set so as the pistons will revolve in the direction indicated by arrow. It will be seen that the steam or water entering port M will be thrown directly against the piston or pistons located beneath the open end j and that each piston as it comes to this part of its revolution will be immediately driven around by the pressure of the steam or water, so that practically the steam or Water is always acting on a pist0nA or pistons. It will also be seen that the act-ion of the steam or water will be main tained against each piston nntilit. reaches the opposite open end of the curved block, at which point the piston is drawn in by the eccentric portion ot the cam-grooves I until it reaches the packing-block K, from which point the piston is again thrown out by the eccentric portion of the cam-grooves I, so that the steam Awill immediatelycomm ence to act on it. When the piston has reached the other end of the curved block J, the cam-grooves 1 have thrown it out to its full extent, in which position it is maintained by the concentric portion of the cainfgroovcs I until it reaches the open end of the curved block, as before described.

From this description it will be seen thatI provide a very effective and economic rotary engine or water-motor. As 4the pistons partially lill the space around the central disk, I secure economy in steam or water. In practice I make the pistons of sulicient number and sniliciently large to lill about t'ty per cent. of the space in the cylindrical casing in Which they move. It will also be understood that on account ofV the peculiar construction adopted that there will be very little friction caused in the revolution of my pistons. It may also be seen that my engine might be driven by compressed air or gas and Work as effectively.

Among other advantages in my rotary engine is thatit may be reversed without any difficulty and is always in position to start immediately upon the steam or Water being turned on. It may be also used as a meter.

Vv'lhat I claim my invention is- In combination, the central disk having ra-l dially-movable pistons, the cam for operating them, consisting of two plates arranged with their edges opposite and at a distance from each other, one olf which extends around the shaft and has an elongated opening for the shaft and the other of which'is located above the shaft, the said plates beingindcpendently adjustable toward and from each other, the abutment J, having an opening extending through it from top to bottom on each side of the central pcrtiointhe inlet and ontletopening on opposite sides ot the central port-ion, and the adjustable packing in the central portion, substantially as described.

A. Il. BRINTN ELL. Witnesses:

LEWIS P. ABELL, LLANCHE BOYD. 

